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alexkharden
12/13/2015, 08:16 AM
I figured this was the best place for this. What does everyone do with the water from their water changes?

I'm considering routing a connection to main main grey water sewage line in the house (city sewer). Would that cause problems, either for my lines or for the city?

Is there a better option, can it be recycled at all?

Thanks!

C.Eymann
12/13/2015, 08:24 AM
I just dump mine down the toilet?

btb72
12/13/2015, 01:58 PM
i just dump mine down the toilet?

+1

alexkharden
12/13/2015, 02:04 PM
Well then I guess I'll be running a new sewer line then :-)

Teecz
12/13/2015, 07:25 PM
I run mine down the drain as well

steallife904
12/14/2015, 09:25 AM
I carry 5 gallon buckets down t0 the curb and dump to go into the sewer

alexkharden
12/14/2015, 09:26 AM
So, kinda along a similar thought. I'll have a dehumidifier in the room. I could run a line from that and capture the water pulled from the air. Is that strictly waste water, or can I do anything with it?

Indymann99
12/14/2015, 08:15 PM
So, kinda along a similar thought. I'll have a dehumidifier in the room. I could run a line from that and capture the water pulled from the air. Is that strictly waste water, or can I do anything with it?

your dehumidifier prob has aluminum condenser fins and they are prob really dirty.... the condensate water will prob be pretty nasty..

Jscwerve
12/14/2015, 08:59 PM
+1

Same here. Always have. The water goes to treatment along with the rest of the sewage, so I always figured that was the best way to get rid of it as opposed to storm drains outside which a lot of times empty into local rivers and streams.

silentstorm
12/15/2015, 09:46 AM
Is there any possible use for the used tank water ?? Not sure if watering plants /grass is a good idea...

Jscwerve
12/15/2015, 01:19 PM
Is there any possible use for the used tank water ?? Not sure if watering plants /grass is a good idea...

Ever seen the movie "Idocracy"? I would think pouring saltwater on to plants would have the same effect as pouring the sports drink on the crops did in the movie. Kill the vegetation.

C.Eymann
12/15/2015, 01:42 PM
I can attest, SW is a great grass killer

alexkharden
12/15/2015, 03:05 PM
I've actually read about people using sw for plants that actually thrive on it (who knew there was such a thing?). Unfortunately for me, my yard doesn't even like grass, let alone some other form of plant life.

Baccara
12/16/2015, 06:28 AM
I pump mine into the shower drain

Reef Ruler
12/16/2015, 07:14 AM
Salt water goes down the shower drain for me. I've heard waste water from RODI units is supposed to be pretty good for watering plants, but that also goes down the drain for me anyways.

alexkharden
12/16/2015, 07:20 AM
Ya, I'm installing a drain in the room I'm building, looks like I'll be running everything down it! Lol :-)

C.Eymann
12/16/2015, 07:22 AM
I've actually read about people using sw for plants that actually thrive on it (who knew there was such a thing?). Unfortunately for me, my yard doesn't even like grass, let alone some other form of plant life.

maybe bog/brackish dwelling plants, because I can pretty much guarantee that if you start watering your average houseplants with old saltwater they will quickly die.

Reefer82
12/16/2015, 08:58 AM
We have a 120' gravel drive. It works great keeping the weeds at bay and is certainly a better alternative to roundup and other herbicides. When it's snowing, down the drain it goes.

WilRams
12/16/2015, 09:15 PM
Down the drain it goes as well as waste water from my RO/DI. I recently upgraded it to 150gpd so at least I feel a little better that I'm not wasting as much as before.

woodnaquanut
12/17/2015, 09:45 AM
RO waste goes into the pond.

Reef water goes into the fish only. It's 'dirty' for reef but clean compared to FO. FO goes to drain.

Sk8r
12/17/2015, 09:53 AM
Wastewater washes clothes just fine. It also mops floors, waters flowers...there's no reason you can't drink it, except that over time a ro/di unit probably doesn't meet city water sanitation standards. Back when I lived in an apartment I ran a tube from the ro/di straight over to the washing machine. Wouldn't totally fill it, but it'd cut down on how much water the machine had to add.

Gundo5000
12/18/2015, 01:18 PM
Mine goes down a drain although Ive been tring to find a better way to be less wasteful, good thread!

Jscwerve
12/22/2015, 09:22 AM
Huh,

This whole time I was thinking the saltwater removed for water change, not the RO waste!

Definitely going to try using it in the garden.

prop-frags
12/23/2015, 07:58 AM
Good thread!
In my neighborhood, the drain out on the street empties into a nearby reservoir. Not a good place to dump water change leftovers! Please ensure that you know where a drain leads to before you dump anything from your tank - especially since it could allow algae or other invasive species out to rivers, lakes, oceans...

I always put water change waste into the sewer. This thread inspires me to engineer a better use for RO brine though...

alexkharden
12/23/2015, 08:03 AM
Well, my water treatment facility is actually less than a mile from my house, so I know where my water goes at least. I don't do much in the way of plant/lawn watering, so really have no use for any of it. I thought about using the ro extra to fill the dog water bowls, but if anything ever happened to them my wife would think I poisoned them. At this point down the drain is my best option.

A1t2o
12/23/2015, 08:04 AM
I was thinking about pouring some out on my sidewalk for when it snows. Would this work or am I just putting more water than salt down? I would only do this for the layer of salt to prevent ice, and for the sleet we are supposed to get today.

alexkharden
12/23/2015, 08:07 AM
It would probably be more water than salt, but it might work. Especially if you did it immediately after a wc, while it was still warm. The warmth would melt the ice, and the salt might keep it from refreezing.

A1t2o
12/23/2015, 12:14 PM
I was hoping the water would evaporate and leave a layer of salt just enough to keep it from getting too slippery.

Silly clownfish
12/23/2015, 06:50 PM
RO wastewater can be used for watering plants, laundry, human bathing, etc.

Water change water (salt water) should never be poured in a storm drain - storm drains go straight to local creeks and reservoirs in almost all communities these days and you do not want excess salt going into natural systems. The salt that washes off of roads in the winter degrade water quality as it is. Don't add to this for no reason. Also, do not use for watering plants. Some shore plants can tolerate salt, but most can't and salt accumulates in soil.

I think using it on your driveway would be similar to road crews spraying brine on highways before snow storms. I would be curious to hear how it works if you wet your driveway and give it a little time to dry before precipitation starts.

Btw, I am a civil engineer specializing in water resources.

Kim

jamie1981
12/24/2015, 05:36 PM
Pouring any water from an aquarium into a storm drain or the street is about the worst place you can dump it most lead directly to local streams or rivers, probably not even legal in most places to do. Just dump it down the toilet or drain that goes to a wastewater treatment plant for proper handling.

How do you think non native and/or evasive plants and animals get spread around? Some have destroyed local lakes and ponds.

Ulva Lettuce Algae is a perfect example of this. Were I'm at there is a growing problem with Ulva lettuce in the Mississippi River it is choking out native plants and they think it was introduced through people with aquariums dumping it outside.

jamie1981
12/24/2015, 05:37 PM
So please do not dump aquairum water outside!

jamie1981
12/24/2015, 05:40 PM
I carry 5 gallon buckets down t0 the curb and dump to go into the sewer

That's not the sewer system where your dumping it, probably runs directly to the gully by your house.

Please dump it into your toilet.

jbm421
12/24/2015, 06:22 PM
Ok so just my .02 cents here but wouldn't RO waste water still be cleaner than city water? My friend uses it for all kinds of things the washer, freshwater tank, plants etc. the water is still going through all the filters and it's not hitting the DI so I am just wondering why it wouldn't be considered filtered water? lol maybe I am having a dummy moment just not understanding how drinking RO waste water could be any worse than drinking from the tap as your not adding anything to it an it is still going through filters....

alexkharden
12/24/2015, 06:24 PM
I'm also a newbie, but it seems to me that the ro wastewater would have I higher tds concentration than normal tap water. So, not cleaner or dirtier, per se, but...thicker maybe, lol.

jbm421
12/24/2015, 06:27 PM
I'm also a newbie, but it seems to me that the ro wastewater would have I higher tds concentration than normal tap water. So, not cleaner or dirtier, per se, but...thicker maybe, lol.

Well I would think that it would be cleaner being that it is going through carbon and sediment would it not?

alexkharden
12/24/2015, 06:29 PM
I thought the way it worked was it goes through the filter and then splits into two streams, the pure water that goes into your tank, and all of the crap the filter separated out of the original water. Someone correct me if I'm wrong, please.

jbm421
12/24/2015, 06:34 PM
It goes through the pre filters the membrane and then the DI depending on the unit and or membrane you get 1 gallon of Rodi and waste up to 4 gallons some have a 1 to 3, 1 to 2 and a 1 to 1 waste ratio.
Also temperature and pressure play a role in this as well. Oh and yes a good water and a waste water line.

alexkharden
12/24/2015, 06:49 PM
So would less pressure be better, so it has more time to filter? Like maybe putting a valve in line before the filter to knock down the pressure?

jbm421
12/24/2015, 07:02 PM
No you want higher pressure at least 50 to 60 psi lower and you need a booster pump but even with that psi a booster pump makes it more efficient

jamie1981
12/24/2015, 08:14 PM
Ok so just my .02 cents here but wouldn't RO waste water still be cleaner than city water? My friend uses it for all kinds of things the washer, freshwater tank, plants etc. the water is still going through all the filters and it's not hitting the DI so I am just wondering why it wouldn't be considered filtered water? lol maybe I am having a dummy moment just not understanding how drinking RO waste water could be any worse than drinking from the tap as your not adding anything to it an it is still going through filters....

Yes it would be cleaner than your tap water because it has been filtered by 3 stages of filtration already. Typically 2 sediment and carbon filter so the water would be as clean as any fridge filter would produce. The only stuff in the wastewater would be what the membrane rejects which goes right through most basic drinking water systems that are not RO based....which most are not.

alexkharden
12/24/2015, 10:29 PM
Well, I have no idea what the water pressure to my house is, hopefully it's enough, but i definitely won't put a valve in the line!

That makes perfect sense jamie1981. I didn't think of the other filters, was just thinking of the ro runoff.

So that begs another question, would ALL of the water in the RO runoff continue to be runoff if someone ran it through the RO filter again? It was said previously that most RO filters have a good/bad ratio. Like 1 part good to 2 parts bad or whatever. If you saved to 2 parts bad in that equation, and used a pump to send it back through the RO filter, would you be able to reclaim some of that waste by the refiltering process?

jamie1981
12/25/2015, 11:28 AM
Well, I have no idea what the water pressure to my house is, hopefully it's enough, but i definitely won't put a valve in the line!

That makes perfect sense jamie1981. I didn't think of the other filters, was just thinking of the ro runoff.

So that begs another question, would ALL of the water in the RO runoff continue to be runoff if someone ran it through the RO filter again? It was said previously that most RO filters have a good/bad ratio. Like 1 part good to 2 parts bad or whatever. If you saved to 2 parts bad in that equation, and used a pump to send it back through the RO filter, would you be able to reclaim some of that waste by the refiltering process?

Yes but but you need to take the dissolved ions that the membrane rejects away. The membrane does not really filter it rejects dissolved ions and sends them down the drain line. Running it in a closed system would prevent this and eventually clog the membrane.
(your pre filters actually catch sediment and impurities and hold onto it) Carbon filters and sediment filters can not filter dissolved ions because they are dissolved in solution, the only way to remove them is through Reverse Osmosis.

bhofosho
12/26/2015, 06:34 PM
So please do not dump aquairum water outside!

So it can only go in the toilet? There's gotta be a better way!

alexkharden
12/26/2015, 06:44 PM
I'm piping it directly into my sewage lines. That's what I'm doing tonight in fact.

Dria
12/26/2015, 08:52 PM
Does anyone know if water change waste from a reef tank is safe to put down the drain if you have a septic system as opposed to sewer?

alexkharden
12/26/2015, 08:54 PM
I'd be wary, but I don't know. Septic systems use bacteria to break down waste, the salt might kill the bacteria. This is me guessing though, I don't know for certain.

Scorpius
12/26/2015, 09:05 PM
Dump your used saltwater on your driveway. No more snow. :lol:

Dria
12/26/2015, 09:22 PM
Yeah, I'm wary too. I'm not going to have a huge tank so my change volume will only be 4 gallons a week or so. Other options I'm considering: the driveway since we have some nuisance weeds growing through the gravel or maybe try it out as a weed killer for the giant blackberries we have out back. ;)

jamie1981
12/27/2015, 06:29 PM
I'd be wary, but I don't know. Septic systems use bacteria to break down waste, the salt might kill the bacteria. This is me guessing though, I don't know for certain.



Well look at it this way the average home with a water softener uses 40-60lbs of salt per month to regenerate all goes down the drain...... far less than most hobbyist are dumping down the drain.

Dria
12/27/2015, 09:09 PM
Oh! That's something I hadn't considered.

I think the volume of salt water is pretty small compared to the total we use assuming I won't have to do a lot near full volume changes.

woodnaquanut
12/28/2015, 05:28 PM
Does anyone know if water change waste from a reef tank is safe to put down the drain if you have a septic system as opposed to sewer?

This comes up every few months. The general consensus is it causes no harm. It's a small percentage of the 'stuff' that goes down the drain it's a non-factor.

nuvuku
12/31/2015, 12:05 PM
I fill my hot tub with rodi waste, fish pond, water plants, hose the dog down. I would like to get a 200 gallon IBC with some sort of mechanical or pressure pump (non electric) so that I could use it for all sorts of stuff instead of drawing more water for the same task that could have been done with the wasted water.

I have noticed the water from my water change keeping my toilette clean at times, kinda neat! I cant de-ice my driveway with sw because I have a storm drain on ether side of the driveway otherwise I would be all over that like a tang to some algae.

I was thinking of cultivating bring shrimp and using the old water from my tank to be the brines "new" water. Or make a huge turf scrubber and then scrub the water clean then UV sterilize it and add in missing elements and recycle it. Sounds a little utopian but Id like to try. A mangrove/macro algae forest that was grown with old tank water would be neat too!

Anyone else with any green ideas?

alexkharden
01/06/2016, 09:10 PM
Well this doesn't do anything for the saltwater waste, but check this out for the RODI waste. Actually found this info on RC.

http://www.premierh2o.com/products/watts_premier_501026_zerowaste_retrofit_kit

Now THAT seems like a worthwhile investment!

Louis Z
01/07/2016, 03:13 AM
I remember reading in a recent Coral mag issue. That some aquarist in Germany never changes the water in his tank, he uses ozone too . Been thinking about that, recycle waste with skimmer, ozone and algae turf scrubber. Remove N, P , protein and yellowing compounds

alexkharden
01/07/2016, 05:24 AM
You're talking about the saltwater waste, not the Rodi?

WilRams
01/07/2016, 07:24 AM
Mines plumbed into the drain. The best I could figure was upgrading my unit to reduce waste water. I feel a little better now about all that water going down the drain...

FunFishin24
01/13/2016, 02:51 PM
This was a very interesting read. Great thread. I currently use my old tank water on driveways but am definetly gonna figure out a better system for my ro/do waste water rather than sending it to the septic. I like the idea of a 200 gal tank with a pump....[emoji106][emoji4]

Fish4ead
01/19/2016, 10:45 PM
The long and short of it is you should dump it down the sewer, not the sink/toilet/tub. Your plumbing goes to a wastewater treatment facility where your taxes pay to convert it to clean freshwater. If you dump it in the street, well, all drains lead to the ocean. At least for those of us who are fortunate enough to live near one. So you see, it's a matter of geographic necessity, which is best for your area.

jamie1981
01/26/2016, 08:07 PM
The long and short of it is you should dump it down the sewer, not the sink/toilet/tub. Your plumbing goes to a wastewater treatment facility where your taxes pay to convert it to clean freshwater. If you dump it in the street, well, all drains lead to the ocean. At least for those of us who are fortunate enough to live near one. So you see, it's a matter of geographic necessity, which is best for your area.

Terrible advice
All drains lead to the ocean?? Seriously thats your logic here?

Your sewer IS your sink/toilet/tub drains and taxes do not pay for this. Your water/sewer bill does and your sewer fees are based on your water usage so you are paying for the wastewater treatment anyway. Your storm drains are what you are thinking of....not the same thing. I suppose if you want to get rid of that lion fish and your near the ocean you should just dump it there......right?:facepalm: If you in FL you probably know what I am talking about

glweek
01/26/2016, 10:48 PM
kinda makes me sad to see all the people that just dump rodi reject water down the drain...haven't paid for the water in my washing machine for over 3 years.

adamwheel
01/27/2016, 03:14 PM
kinda makes me sad to see all the people that just dump rodi reject water down the drain...haven't paid for the water in my washing machine for over 3 years.

Agree. My rejected RODI goes to a Brute trash can that has a uniseal overflow to laundry tub in case it overfills.

I have a remote button that turns the Sicce pump on in the brute and fills the washer. The wife even likes it.

I used to feel very guilty about all the water going down the drain.

CStrickland
01/27/2016, 10:34 PM
I think it's also a good idea to check your waste ratio if you live someplace that has seasonal temp differences. My rodi got down to 6.5:1 before I noticed and contacted the manufacturer for help. Turns out that colder water passes the membrane easier. I've got a valve on now to get it back to 4:1, some people switch their flow restricters twice a year.

I feel bad that I was wasting almost twice as much water as necessary, but I'm glad I've got it fixed.

TimeConsumer
01/30/2016, 08:58 PM
Everyone knows the best use of RODI wastewater is to brew beer. Really big tank? Brew lots of beer.

jamie1981
01/30/2016, 09:04 PM
I think people got confused somewhere what this thread was originally about. It was about the saltwater wastewater from a water change NOT the wastewater from a RODI unit.

TimeConsumer
01/30/2016, 10:28 PM
I think people got confused somewhere what this thread was originally about. It was about the saltwater wastewater from a water change NOT the wastewater from a RODI unit.

Hmmm, don't brew beer with that. Maybe brine a turkey?

koidealer
01/31/2016, 12:29 AM
I use it to kill weeds around the yard. Just as good as roundup and cheaper too!

HARLEYDAWG01
02/03/2016, 01:57 PM
Flush the saltwater. RODI waste water is fine for plants and lawn

denash24
02/03/2016, 08:30 PM
RODI waste water will be going into the pool or to water the lawn, salt water flushed down the toilet.

Sully72
02/25/2016, 01:26 PM
Yep...I dump mine in the toilet or in the kitchen sink.